John thomson



(No Model.) Q

J. THOMSON.

GRANKBBARING FOR OSGILLATING DISKS.

N0. 387,829. Patented Aug. 14, 1888,

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JOHN THOMSON, OF BROOKLYN, NEW YORK.

CRANK-BEARiNG FOR OSClLLATlNG DiSKS.

SPECIFICATION forming part of Letters Patent No. 387,829, dated August14-, 1888.

Application filed February I. 1868. Serial No. 262,606. (No model.)

To all whom it may concern:

Be it known that I, Jenn THOMSON, a citizen of the United States, andresiding in the city of Brooklyn, Kings county, State of New York, haveinvented certain new and useful Improvements in Crank-Bearings for Oscillating Disks, of which the ibllowing'is a specifieation.

This invention relates to an improved form of crank-hcaring forcontrolling the actionof oscillating disks. 5

In the drawings, Figure 1 shows the device in elevation andcrossscction, and the application thereof may be assumed as that of awater-meter or a blower, a pump or a steamengine-such, for instance, asis illustrated in my patent, No. 375,023. Fig. 2 is a. top plan view.

The object of the invention is to obviate the false thrust due to theaction of. cylindrical bearings. This is avoided by employing a rotatingcrank-block, the arrangement and construction being such thatthe actingsurfaces and bearings therefor are parallel with the central axis of thedish-shaft or at a right an gle to the line of inward and outward thrustthereof.

In the illustration, 5 rcpresentsthc diskchamber; 6, the ball; 7, thesockets; S, the

disk, and 9 the disk-shaft.

The action of the disk is of course well known, and here requires nospecial descrip tion, being fully set forth in my patent above referredto, except to observe that the constant oscillation of the disk causesthe disk-shaft to travel in a circle, as G, or conversely, the shaftbeing caused to travel in a circle will produce oscillating action inthe disk. In either instance, however, the power must be received ortransmitted through the dislrshaft. The chief peculiarity of the motionof the diskshaft, and to which this, my invention, particularly refers,is that its axis, line 10, beginning at the center 11 of the ball foreach oscillation of the disk, describes a true cone; therefore thethrust of thcdisk-shai't is at less than a right angle to the centralaxis, 12, to or from which the said thrust is transmitted or re ccived.The consequence of this is that with any of the arrangements heretoforeusedsuch, for instance, as are shown in lteulcauxs and the central fixedconical nearing, l6,which projects inward toward the ball from the frameor plate 17, the latter being separately scoured to the disk-chamber.

The necessary form of the craulrblock and its hearings to effect thedesired relief is determined by the angle of the disk-shaft. Thus in theillustration the angle of the diskshaft is twenty degrees from thevertical. The hearing 18 being first provided, the outer surface, 19,and the inner surface, 20, are then simply formed parallel to the boreof the disk-shaft bearing, and in like manner the bearings 14 and 16 areconstructed. that any client tending to thrust the dislrshaft outwardwill be resisted by the hearing at 19, which is at a right angle to theline of thrust of the disk-shaft, and also any effort to thrust thediskshaft inward will be resisted at 20, which is also at a right angleto the line of thrust of the disk-shaft, as indicated, respectively, byarrows e and Thus, no dynamic efi'ect can be produced by the disk-shafttending either to cramp the action as a whole or to add to the frictionof rotation. In other words, the entire effort, if from the disk, is torotate the crank-block, or, if from the crank block, to oscillate thedisk.

The central shaft, 21, will be secured to the crank-block in a mannernecessary to properly effect the intended duty. It is here shown asbeing screwed thereto, as at 22.

The lower face of the crank-block is adapted to rest upon the shoulder23, formed at the bottom of the bearing 14. There is thus no tendencyfor the crank-block to slip down and wedge.

It is evident that two crank-blocks may be employed where the duty'issevere-one on each side of the diskor a duplicate of that shown on theupper side of the disk, to be situ- The resultof this is ICC ated belowthe disk and Opposite that shown in the illustration; also, that theerank'block need not necessarily be a complete circular ring, as asegment thereof may be used.

claim 1. In an oscillating (lisk-acti0n,' the combination of thedisk-shaft, rotating crank-block; and outer and inner bearings 4 16, theacting surfaces of said block and bearings being parallel with the saiddisk-shaft,

2. A rotating crank-block for oscillating flisk-aetions, having a borefor the disk-shaft and having bearings formed parallel to the bore at aright angle to the lines of thrust of said disk-shaft.

14 for the'exterior faces of the block, and a aonical bearing, 16, forthe interior faces of the 20 block. y

In testimony whereofl have signed my name to this specification in. thepresence of two subseribing witnesses.

JOHN THOMSON.

YVitnessem R L. FRElDllIAN,

A. E T, HANsMAmL

